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The Technology


The Plasma Source
The High Target Utilisation Sputtering (HiTUS) technology produces a high density low energy magnetised plasma (ion density >1013 cm-3 and ion energy <10 eV) without the requirement of a target to strike or maintain the plasma.

Remote Plasma Sputtering
Efficient, uniform high rate sputtering only occurs upon the application of a sufficient target bias (DC, pulsed DC or RF) to accelerate the initially low energy ions into the target surface. As the plasma is not driven by the target, the plasma density and target ion energy can be controlled independently.

Ionised Physical Vapour Deposition (iPVD)
A significant fraction of the sputter flux is continuously ionised by the high density plasma and therefore remote plasma sputtering is inherently an iPVD process. Substrate biasing can be used to control the energy and direction of the ionised sputter flux to enable the coating of high aspect ratio trenches and vias and improve film coverage in normally inaccessible shadow regions by re-sputtering during deposition.

Substrate Interactions
The magnetised plasma interacts with the substrate coating process in an atypical and beneficial manner compared to conventional sputter processes. An optimal balance of plasma density and deposition rate may be set to deliver a low energy ‘plasma assist' to the deposition process without the need for substrate bias. This beneficially impacts the thin film coating properties and enhances reactive deposition processes thereby resulting in the ability to coat fast deposition rate, high density films on to temperature sensitive polymeric substrates.


Plasma Quest Technology


For more information download background to the operation of the PQL Plasma Technology.pdf

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